Ptychoderidae is a family of acorn worms.
Genera and species
The World Register of Marine Species lists the following:
Contains the following species:
Balanoglossus apertus (Spengel, 1893)
Balanoglossus aurantiacus (Girard, 1853)
Balanoglossus australiensis (Hill, 1894)
Balanoglossus borealis (Willey, 1899)
Balanoglossus capensis (Gilchrist, 1908)
Balanoglossus carnosus Müller in Spengel, 1893
Balanoglossus clavigerus delle Chiaje, 1829
Balanoglossus gigas Müller in Spengel, 1893
Balanoglossus hydrocephalus van der Horst
Balanoglossus misakiensis Kuwano, 1902
Balanoglossus natalensis (Gilchrist, 1908)
Balanoglossus occidentalis Ritter, 1902
Balanoglossus proterogonius Belichov, 1928
Balanoglossus robinii author unknown
Balanoglossus salmoneus Belichov, 1928
Balanoglossus stephensoni van der Horst, 1937
Balanoglossus studiosorum van der Horst
Contains the following species:
Glossobalanus alatus van der Horst
Glossobalanus barnharti Cameron & Ostiguy, 2013
Glossobalanus berkeleyi (Willey, 1931)
Glossobalanus crozieri van der Horst, 1924
Glossobalanus elongatus Spengel, 1904
Glossobalanus hartmanae Cameron & Ostiguy, 2013
Glossobalanus hedleyi (Hill, 1897)
Glossobalanus indicus Rao, 1955
Glossobalanus marginatus Meek, 1922
Glossobalanus minutus Kowalevsky, 1866
Glossobalanus mortenseni van der Horst, 1932
Glossobalanus parvulus (Punnett, 1906)
Glossobalanus ruficollis (Willey, 1899)
Glossobalanus sarniensis (Koehler, 1886)
Glossobalanus williami Cameron & Ostiguy, 2013
Contains the following species:
Ptychodera bahamensis Spengel, 1893
Ptychodera ceylonica author unknown
Ptychodera erythrea Spengel
Ptychodera flava Eschscholtz, 1825
Ptychodera pelsarti Dakin, 1916
